Computer networks connect devices, computers and other computers to share resources, information and services. They can be based on wireless or wired connections, and can be configured in different network topologies. Today, networks are vital to business. They enable us to communicate more efficiently, collaborate with other people and perform more efficiently. They also assist with data security and accessibility.
Computer networking is a broad field that includes the creation of, maintenance, and design of communication networks. It is a mix of computer science and electrical engineering.
The Internet is the most renowned computer network, allowing find this billions of users to connect and share resources at the same time. The network employs a switching model to direct data traffic through an almost limitless number of connections and pathways. Each packet contains information for control as well as data from the user. Control information includes address of the network that is used to connect to the source and destination errors detection codes, as well as sequencing information. The payload is located in the data part of a byte.
In a typical network a central server stores information and controls access for users to vital resources like printers, photocopiers, and other files. The server is protected by firewalls and multifactor authentication systems to ensure that only authorized users of the network are able to access it. Centralizing information stored on servers allows administrators and security policy enforcers to conduct regular backups. Employees can also access corporate services and apps, regardless of their location including video-calling software as well as document-sharing.
